Open source alternatives to WordPress.com

Minimal self-hosted blogging engines: a database-free or single-binary blog that renders fast and stays yours. WriteFreely powers federated blogs on the Fediverse; HTMLy works from plain files with no database at all.

Compare the options on what matters for your case: the license (if you run a business, check commercial use), the platforms you already operate, and how actively each project releases. Every program above links to its official project page, release notes and source code.